Vacuum feed system.



F. WEINBERG. VACUUM FE'ED SYSTEM.

APPLICATION nuzo NOV. Is. 1915.

Patented June 12,1917.

UNITED' STATES FREDERICK WEINBERG,

015 DETROIT, MICHIGAN.

VACUUM FEED SYSTEM.

Specification of Letters Patent.

Patented June 12, 1917.

Application filed November 15, 1915. Serial No. 51,585.

To all whom it may concern:

Be it-known that I, FREDERICK amar-inc, a citizen of-the United States, residing at Detroit, county of \Vayne, State of Michigan, have invented a certain new and useful Improvement in Vacuum Feed Systems, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, referencebeing had to the accompanying drawings, which form a part of this specification.

My invention relates to apparatus for vacuum feed system for internal combustion engines andan object of my improvements is to provide an apparatus that shall be simple in constructiomeasily assembled, cheap to make, and efiicient in operation, as well as securing compactness.

I secure this object in the device illus- 'trated .in the accompanying drawings in which,

Q angles to the section of Fig. 1.

Fi 3 is a detailed sectional view showting t e discharge valve in a difierent posi "b and from which the fuel is normally supplied to the carbureter of the engine. (1 is a tion to that shown in Fig. 1.

-'a is the usual auxiliary tank used in such apparatus. This is divided into the upper chamber 6 and the lower chamber 0. The upper chamber is the vacuum chamber into which the liquid fuel is at first drawn, and c is the reservoir or chamber into which the liquid fuel is discharged from the chamber float in the chamber b having a downwardly extending rod h passing through and reiciprocating in an aperture in a lug i in the conduit 0 forming a communication between the chamber band reservoir 0. f is a non* return valve. This valve is provided with a central aperture near its upper edge and a similar one near its lower edge. 9 is a wire securedat its lower end in the casting e passing through the lower aperture in the valve disk f, then turning upward and passing through the aperture near the upper edge of said disk and at its upper end again joining the conduit 6. The valve 7 normally hangs in a vertical positioh away from its seat, as shownin Fig. 3, but when a vacuum is formed in the chamber 6 the valve 7 is thereby drawn to its seat closing the passage through the conduit e. y

14 is a plug which may be of cast ma terial and fimshed in the lathe where required. The plug 14 extends into an aperture through the upper wall of the chamber Z) and is secured air-tight therein'by a nut 11 which is screw-threaded for a part of its bore and at this part engages screw-threads upon an extension from the plu 14. The nut 11 is expanded beyond its so ewthreaded part at about half its length toform a chamber 12 within its enlargement and at its inner edge being bent outward to..form a flange which engages the wall of the chamber 6 to secure the plu 14 in place, there being the usual shoul er and interposing washers used in such construction. The other end-of the nut 11 is expanded to form a deflecting portion 11". There is an aperture m extending vertically in the plug 14 and opening at thelower end of said plug where it is provided wlti. a conical valve seat. The opening, or passage, m'turns at right angles at its upper end and extends laterally to engage a pipe, not shown, which shall be connected with a means for producing a vacuum in a way well understood in theart and therefore not herein specifically described.

7' is a valve extending upward from the float d and adapted to close the lower end of the passage m-When the level of the liquid in the chamber 71 has risen to such an extent as to carry the valve d upward until the valve] j engages the valve seat at the lower end of the passage k is a rod extending upward from the valve j into the passage m which may serve as a guide for the float d.

o is a passage extending vertically upward from the lower end of the plug 14 and connecting with a pipe 8 at its upper end which pipe communicates at its lower end with the reservoir 0. p is a ball valve resting upon the upper end of thepassage o and opening toward the pipe 8. 'n is a rod extending upward from the float (i into the passage 0 and adapted to strike against and raise the valve 7' when the float d has been raised to a sufficient extent by a rise of level of the liquid in the chamber 71 g is an aperture in' the plug 14 opening at the side of said plug at one end, and at the other end communicating with the passage 0 and pipe 8. r is a ball valve opening inward and seated upon the inner end of the passage 9'. I

10 1s a, passage in the plug 14 which is adapted to be connected with a supply tank. The pa$age 10 opens into chamber formed by the enlargement of the nut 11.

15 is-a plug closi-ng an aperture through thelower wa'll of the r 'ervoir c. The ping 15 isfheid in'positio by a nut 11 of the same construction as the nut 11, above described, and forming a chamber 12" entirely analogous to't-he chamber 12, above described.- The plug 15 extends upward into the reservoir 0 so that any water that a may accumulate in said'reservoir will rest in the bottom of said reservoir 0 below the upper end of said plug.

3 is an aperture orpassage extending downward from the upper end of the plug 15 intoa central cylindrical cavity in which is the turn-plug 8 of a cock having diametral passage 9- tln-rethrough. (3 is a passage exteiuliilg downward in the plug :15 and .adapted to eommunumte with the carburetor for supplying gasolcne thereto,

5 is an aperture in the plug 15- communicating with the central cavity In said plug, and opening laterally in a. dehvery-spmit "therefrom'at one end and at the other end opening into the reservoir 6 tl'n-ough the chamber 12" formed by the until; The .opcning'froni the passa fefi into:thea-cservoir is at the lower end 0 7 said reservoir. below the u'pperend of the plug 1 1 7 is a handle, or opcrat ingpart. for the plug 8. The plug 8 may be turned to place the passage 3 'into communicationwith the passage 6 for supplying gasolene to'the carburetcr, or it may lie-turned to close the connection between the "passages Sand 6 and form a continuous passage through :"rso that the water that may ha I h-cun lllal'ed in the bottom of the reservoir (1 maybe discharged thcrefrom.. 4

The shell of the tlllllifl is made up of an upper and lower part which are joined togetheuby being-secured lupon opposite sides "of the metal disleat; The upper portion of thcshell of said tanhlhas a flange 2 formed thereon, which for the greater part of the periphery, extends over theedge of the disk :11 and downward below the lowcr'surface of said disk. There is a flange 1; formed around the upper edge of the lower part of the shcll of the tank (1.. 'lhetn'o parts of said'shell are secured to the disk .1.- by said flanges and by nuts and bolts. p

w is a groove forincd in the lower surface f the disk. The pipe .5' communicates with said groove and thcrethrough with the reservoir 0. l) is a. turned-over portion of the disk at extending laterally a big therefrom by which lug the tank (L may be secured to a stationary support.

The nuts 11 and '11 have apertures in their walls torn-ling connnunicatiuns between the chambers 12 and 7/ and 12 and reservoir The flaring portion 11 of the nut 11 extends over the Heat cl and prevents the incoming bound from falling on said float.

'l hc operation of the above described derice is as follows; it being understood that 'hc passage H.) is in communication with a dpply tank.

" lhe liquid fuel falls in the chamber 6 until the float (I has carried the valve j away from its seat and has allowed the balL1/ t0 rest upon its seat closing the passage 0. -Av.acuum is drawn in the chamber I) through the passage m causing the liquid to How into said chamber through the passage 10 and champassage. The valve 1' rises and restores approximately atmospheric pressure by admittlng air through the passage (1.

lhc valve 77 will resist rcn'io'val from its seat both because of its wclght-andd ecausti of the excess of pressure on its outer surface,-

so. that the level of the liquid in the chamber will rise somewhat after'tlie motion of the lloatd has been checked bysaid valve and when the valve has been un'seated, .thcl float will be raised quickly bringing the waive prmnptly to its sca't. i

\\"hen the lcvcl or' tlualiquid in 7) falls the valvrj will be held to its 50:11} by the excess of pressure on its lower surface thus preventing the valve from when said valve is unscatrd the float will fall quickly promptly seating the valve 7n,

What I claim v y 1. In an apparatus of the l'cind described,

descending and a vacuum rhalnber having an aperture ilk itsupper wall, a 'vacLum producing passage, a pressure equalizing passagefa ph g' 010sing said aperture, a passage extcndingivcrtil-ally from said ehainbcr'in said' plug and .(mlnnnmicating with the vacuum producing adapted to close the lower end of the fir st mentioned vertically extending.passage; an"

outwardly opening nolrrcturui valve adapted to close the last nmntioncd vertically extending passage and a rod extending 'iiom said float into the last named vertically extending passage adapted to unseat said valve. l I

2. In an apparatus of the kind described, a vacuum chamber having an aperture in its upper wall, a vacuum producing passage, a pressure equalizing passage, a plug closing said aperture, a passage extending vers tieally from said chamber in said plug, and communicating with the vacuum producing passage, a passage extending vertically in said plug and communicating with the pressure equalizing passage, a float in said chamber, a valve on said float adapted to close the lower end of the first n'ientioned vertically extending passage, an outwardly opening non-return valve adapted to close the last mentioned vertically extending passage 'valve, and a and a rod extending from said float into the last named vertically extending passage adapted to unseat said valve, a passage in said plug opening to the outer air'at the side thereof and opening to said equalizing passage and provided with an automatic inwardly opening check valve. 3. In an apparatus of the kind described, a vacuum chamber having an aperture in the upper wall, a vacuum producing passage, a pressure equalizing passage, a plug closing said aperture, a passage extending vertically from said chamber in said plug, and communicating with the vacuum passage, a passage extending vertically from said chamber in said plug andcommunicatingwith the pressure equalizing passage, 9. float in said chamber, a valve on said float adapted to close the lower end of the first mentioned vertically extending passage, an outwardly opening non-return valve adapted to close the last mentioned vertically extending" passage, and a rod extendin from said float into the last named vertica ly extending passage adapted to, unseat said uel supply passage in said plug opening into said chamber.

4. In an apparatus of the kind described, the combination of a disk w, a bell-shaped shell secured with its open end upon said disk and closed thereby, an inverted bellshaped shell below said disk having its open end secured against and closed by said disk, a space between said disk and the flange of the lower bell-shaped shell, and a pipe 8 constituting an equalizing passage oommunicating with said space and with the upper portion of the chamber formed by the first mentioned shell.

5. Tn. an apparatus of the kind described, a reservoir 0, a plug extending through the lower end of said reservoir and a short distance upward into said reservoir, a discharge orifice ex ending from the upper end of said plug and adaptedto convey the liquid fuel to a carburetor, a passage exbenrliug from th side of said plug at the lower end of said reservoir and opening to the outside of said plug, and a cock located in said plug and adapted to close either one of said passages and open the other of said passages.

6. In an apparatus of the kind described, a chamber, a plug extending into said cham her, said plug being provided with a screw.- threaded part in said chamber, a'nut en aging said screw-threaded part and expan' ing to form a chamber between its wall and the wall. 'of said plug, and a passage opening through said plug and into the last named chamber, V 4

T. In an apparatus of the kind described,

a disk .1 cxteudiu laterally to form a securing lug l, a bell-like shell secured above and a bell-like shcllsecured below said disk, substantially as shown and described.

8. In an apparatus of the kind described, a disk a: extending laterally to form a securing lug 2, a bell-shaped shell secured above, and a bell-shaped shell secured below said disk, said disk being provided with an aperture within said shells, and a conduit 6 engaging in. said aperture.

0. in an apparatus of the kind described, a vaclllum chamber having an aperture in the upper wall thereof, a plug in said aperture, a supply passage for liquid fuel opening through said plug, an operating float in said chamber adapted to reciprocate below said plug, and a deflecting plate extending over said float and below the delivery end of said supply passage.

10. In an apparatus of the kind described, a vacuum chamber having an aperture in the upper wall thereof, a plug extending through said aperture, a supply passage for li uid fuel through said plug, an operating oat adapted to reciprocate below said plug, said plug being provided with a screwthreaded part in said chamber, a. nut engaging said screiv-threll ded end expandin to form a chamber between its wall an the Wall of said plug, said supply passage opening into the last in med chamber, and a deflecting plate exten ing over said float.

11. In an apparatus of the kind described, a vacuum chamber, a. vacuum producing passage opening through the top of said cham her, an equalizing passage opening through the top of said chamber, a, float in sald chamber a valve secured directly' to said-- float an adapted ,to close the lower end of the vacuum producing passage when the float rises, a valve in said equalizing passage, a projection from said float adapted to unseat the last named valve when the float rises, the valve in the equalizing passage being adapted to resist a force tending to open it. said float being actuated by the action of the liquid in said chamber and difference of Invssurc on the valve in the equalizing passage.

iir

12. In an apparatus of the kind-described, a vacuuln chamber, an equalizing passage opening from said chamber, 'an outwardly opening valve in said passage, afloat in said chamber and a projection adapted to strike against said valve and raise it from its seat, said valve being adapted to resist a force tending 'to open it, said float being actuated' by the action of the liquid in said chamber and difi'ere'nceof pressure on the valve in the equalizing passage.

' 13. In an apparatus of the kind described, a disk ac, a shell secured to either side of said disk by means of flanges, a space between the disk and flange of the lower shell, and "a 'pipe connecting with said space and extending upward. r

14. In an apparatus of the kind described, a disk in, a shell secured to either side forniing two chambers, interposed packing washers between the flanges of said shells and said disk, said shells and said disk being fastened together at their edges.

15. In' an apparatus of the kind described,

a disk zg'a shell secured on eitherside formcation.

FREDERICK \VEINBERG.

ing two chambers, said disk having a flange 

